<template>
	<view class="nav">
		<view :style="'height:'+ status + 'rpx' +';' + containerStyle"></view>
		<!-- 首页头部样式  -->
		<view v-if="isHome" class="headNav"
			:style="'height:' + navHeight + 'rpx;line-height:' + navHeight +'rpx;padding-left:20rpx' ">
			<text class="city">中部地区</text>
			<view style="flex:1">
				<navigator url="../../pages/search/index" :style="
				'height:'+ menu.height *2 +
				'rpx;line-height:'
				+ menu.height *2 +
				'rpx;margin-top:'
				 + (menu.top*2 - status) +
				'rpx;margin-left:32rpx;margin-ringht:' +
				(menu.width*2 +24) + 
				'rpx;background:#f4f4f4;border-radius:200rpx;text-align:center'
				">
					<text class="search-text">找医院</text>
				</navigator>
			</view>
		</view>
		<view v-else class="navbar" :style="'height:'+ navHeight + 'rpx' +';'  + containerStyle">
			<view class="back-icon" @click="backOrHome">
				<image v-if="pages > 1" src="../../static/resource/navbar/ic_back.png"></image>
				<image v-else src="../../static/resource/navbar/ic_home.png"></image>
			</view>
			<view class="nav-title" v-if="titleText">
				<view :style="'height:' + navHeight + 'rpx;line-height:'+ navHeight + 'rpx;'+ textStyle">
					{{titleText}}
				</view>
			</view>
		</view>
	</view>
</template>

<script setup>
	import {
		ref,
		reactive,
		onBeforeMount
	} from 'vue';
	//状态栏样式
	const props = defineProps({
		background: {
			type: String,
			default: 'rgba(255,255,255,1)'
		},
		color: {
			type: String,
			default: 'rgba(0,0,0,1)'
		},
		fontSize: {
			type: String,
			default: 32
		},
		iconWidth: {
			type: String,
			default: 116
		},
		iconHeight: {
			type: String,
			default: 38
		},
		titleText: {
			type: String,
			default: ''
		},
		isHome: {
			type: Boolean,
			default: false
		}
	})
	const emits = defineEmits(['navBarAttached'])
	onBeforeMount(() => {
		setNavSize()
		setstyle()
		emits('navBarAttached', {
			detail: {
				statusHeight: status.value,
				navHeight: navHeight.value,
				navBarHeight: status.value + navHeight.value
			}
		})
	})
	//状态栏高度
	const status = ref(0)
	//内容高度
	const navHeight = ref(0)
	//背景颜色
	const containerStyle = ref('')
	//字体样式
	const textStyle = ref('')
	//图标的样式
	const iconStyle = ref('')
	//页面栈的数量
	const pages = ref(getCurrentPages().length)
	//获取到胶囊的位置
	const menu = reactive(uni.getMenuButtonBoundingClientRect())
	//计算状态栏高度
	const setNavSize = () => {
		const {
			system,
			statusBarHeight
		} = uni.getSystemInfoSync()
		status.value = statusBarHeight * 2
		const isios = system.indexOf('ios') > -1
		//判断机型的状态栏高度
		if (!isios) {
			navHeight.value = 96
		} else {
			navHeight.value = 88
		}
		// console.log(res)
	}
	//样式设置
	const setstyle = () => {
		containerStyle.value = ['background:' + props.background].join(';')
		textStyle.value = ['color:' + props.color, 'font-size:' + props.fontSize + 'rpx'].join(';')
		iconStyle.value = ['width:' + props.iconWidth + 'rpx', 'height:' + props.iconHeight + 'rpx'].join(';')
	}
	const backOrHome = () => {
		//当页面栈大于1返回上一页
		if (pages.value > 1) {
			uni.navigateBack()
		} else {
			//关闭其他页面
			uni.switchTab({
				url: '/pages/index/index'
			})
		}
	}
</script>

<style>
	.nav {
		position: fixed;
		width: 100%;
		top: 0;
		left: 0;
		z-index: 2;
	}

	.back-icon {
		display: flex;
		align-items: center;
		width: 64rpx;
		height: 100%;
	}

	.back-icon image {
		width: 64rpx;
		height: 64rpx;
	}

	.navbar {
		position: relative;
	}

	.nav-title {
		position: absolute;
		top: 0;
		left: 50%;
		transform: translate(-50%);
	}

	.headNav {
		display: flex;
	}

	.city {
		display: inline-block;
		position: relative;
		font-size: 30rpx;
		font-weight: bold;
		padding-left: 55rpx;
		background: url() no-repeat left center;
		background-size: 40rpx;
	}

	.city:after {
		content: ' ';
		display: inline-block;
		height: 6px;
		width: 6px;
		border-width: 1px 1px 0 0;
		border-color: #353535;
		border-style: solid;
		-webkit-transform: matrix(0.71, 0.71, -0.71, 0.71, 0, 0);
		transform: matrix(0.71, 0.71, -0.71, 0.71, 0, 0);
		position: relative;
		top: -2px;
		position: absolute;
		top: 50%;
		margin-top: -4px;
		right: -10px;
	}

	.search-text {
		display: inline-block;
		padding-left: 30rpx;
		color: #bbbbbb;
		font-size: 26rpx;
		background: url() no-repeat left center;
		background-size: 23rpx;
	}
</style>